DCS,
I had to wrap my teeth and gums in gauze before radiation to help with the mouth sores. Just place the gauze over the teeth and down into the gums wherever there is pain. I even had the floride trays and still had bad mouth sores. The gauze really seemed to help. My sores were from the scattering of radiation as mine was tonsil. Check with the docs to see how this might help. I also rinsed my mouth with salt water twice daily and the nurses sprayed my mouth after treatment with saline. Good luck and hang in there. It won't be easy but time will heal this mess too.

Rob J.